Stool sticky and smelly may be due to dietary factors, and gastrointestinal dysfunction, intestinal diseases and other pathological causes. 1. Physiological factors: eating too much food rich in fat and protein, the intestinal decomposition process produces a lot of fecal odorant, part of the protein and grease will make the stool become greasy, which will produce sticky and smelly stool. 2. Pathologic factors: (1) gastrointestinal dysfunction: irregular work and rest, work and life stress, too little exercise, unhealthy eating habits can lead to gastrointestinal dysfunction and indigestion, which will result in smelly and sticky stools. (2) intestinal diseases: for example, colitis, mostly bacterial or viral infections, leading to the destruction of the intestinal flora, the symptom is sticky and smelly stools. There may be other pathological factors that lead to sticky and smelly stools, so it is recommended to go to the hospital and take appropriate measures under the guidance of the doctor.